Internal combustion engine



April 12, v1932. A Ml N|VEN INTERNAL coMBUsTIoN ENGINE Filed Deo. 19, 1927 l 1 ARGHIEMACPHAIL NIvEN, ,on DETROIT,

Patented Apr. 12, 1932 Mrcnrefnit, lissrefnoav 'ro coNTINENfrAL A MOTORS CORPORATION, OFDETROIT', MICHIGAAN A CORPORATION 0F VIP\l('5-I l\Tl1-Li4 YINTERNAL. ooMBUsTIoN y.analisis Application filed December 19, 1927. Serial 1105240362. g y" Y This invention relates internal combustion engines and refers more particularly to the sleeve valve type of engine.

Y :One object of my invention residesin proriding an engine construction Which vvillex-j Aaci 22; respectively.

haust the gases` from an improved manner, reducing the back pressure eective on'theengine. A rfurther object resides in an engine construction which Will impart a directional effecten the exhaust gases Ibefore passage offthe'gases to the exhaust manifold, Such av construction in addition to reducing the engine back pressure permits the use of an exhaust 4vmanifold of simplified construction 4Vas hereinafter described. 1"

Referring f to the accompanying drawings illustrating one embodiment of myinvention,

`Fig. 1 is a plan sectional vievv ofthe engine illustrating my invention, and f Fig. 2 isa detail section'through 2-'2of Final. f 'l l 4Referring to the drawings reference character 10 illustrates the'cy-linderblock or main 'engine body casting formed with cylinders 11 having intake and exhaust'ports 12 and 13 re*y spectively.- Cylinder block intake Vchambers r14 communicate 'with the ports12 tosupply the cylinders 10 vvith the combustible mixture through openings 15 fromthe usualintake manifold (not shown). The-longitudinally extending Walls-16 connect adjacentl cylinders and separate the intake chambers 14 fromthe cylinder block exhaust chambers 17. The'chambers 17 are open to an exhaust manifold 18 preferably divided centrally by 'a Wall 19 4soasY to form separate branches 20,'721 which may havethe centrally located outlets merged .or combined in a common outlet 24: beyond the vvall 19`as best shown in Fig. 2. 1 Cooperating with the cylinder ports 12 and 13 areoneaor more sleevevalves25yhaving intake and exhaustports 26. 27 respectively,

such sleeve -valves being of any` preferred type. andmov-ement. e The particular ,number and arrangement-1. of .the eeve or sleeves forms 'no partk ofthis invention apart from theprovision of sometype of sleeve valve or the engine cylinders in 'erally transversely of the like Y' means serving tocontrol Vthe Vcylinder ports 12 and 13. `I a VThe cylinder block exhaust 'chambers 17 are bounded at ltheir sides by substantially transverse Walls 28 lformed hollovvv for circuy lation of a cooling medium. These transverse walls'28 inaddition to extending genengine also extend7 toward their outer vends, slightly longitudinally of the 'engine inV the direction of the exhaust manifold` outlets 22 and 23. Y. Thus Y Wherethe outlets 22, 23 are centrallyflocat'ed l with respect to the cylinder block, the charnbers 17 extend from the cylinder ports 13 generally transversely of the cylinderblock tovvard the exhaust*manifoldoutlcts at the center Vof the blockfthe chambersl forthe cyl` indersfto one side of the vvall 19v or engine` block center being directed. generally toward those tothe other side. Y Such an arrangement imparts to the exhaust gases a directionalef feet assi-sting Athe gases in exhausting With a minimum of friction and back pressure. I prefer, in order to realize the fullest b'enets of my invention, to provide each of the ports 13 of each-.cylinder with an independent or x separate chamber l7nas illustrated. ,Through the `use of the branches 20, 21 .there is no overlapping of exhaust periods in the exhaust manifold with a firing order ofthe cylinders such as K 1.-5-3-6-f2-4. Furthermore, the exhaust manifold branches may be provid-ed with relatively large openings 29 each opening to Ahalf the cylinders and being free fromvobstructions suchas division Walls or separate conduits for each cylinder as now customary. Whatl claim as my invention is :v

' 1. In an internal combustion engine of the sleeve fvalve type` the combination of a cylinder block having a plurality of engine cylinders ported forintaleV and exhaust;7 sleeve communicating with the exhaustk chambers directlyV with thev an exhaust manifold device y Ich and having a discharge outlet, the said chambers extending from the cylinder exhaust ports substantially in the plane containing the exhaust ports and generally transversely of and Within the cylinder block toward the side thereof and in the direction of the manifold outlet. f

2. In an internal combustion engine of the sleeve valve type the combination of .a cylinder block having a plurality of engine cylinders ported for intake and exhaust, cylinder block intake means communicating With the cylinder intake ports, cylinder block exhaust chambers communicating With the cyl- 'i inder exhaust ports, sleeve valve means Within the cylinders controlling said cylinder intake and exhaust ports, an exhaust manifold device communicating directly With the exhaust chambers and having a discharge outlet, the said chambers extending fromthe cylinder exhaust ports generally transversely of and Within the cylinder block toward the side thereof and in the direction of the manifold outlet, the exhaust chambers of a portion of the cylinders extending generally toward the exhaust chambers of other cylinders.

3. In an internal combustion engine of the sleeve valve type the combination of a cylinder block having a plurality of engine cylinders ported for intake and exhaust, cylinder block intake means communicating with the cylinder intake ports, cylinder block exhaust chambers communicating directly with the cylinder exhaust ports, sleeve valve means Within the cylinders controlling said cylinder intake and exhaust ports, an exhaust manifold device communicating With the exhaust chamber and having a discharge outlet substantially centrally of the cylinder block, the said exhaust chambers extending generally transversely of and Within the cylinder block toward the said discharge outlet.

4. In an internal combustion engine of the sleeve valve type the combination of a cylinder block having a plurality of engine cylinders ported for intake and exhaust, cylinder block intake means communicating with the cylinder intake ports, cylinder block exhaust chambers communicating directly With the cylinder exhaust ports, sleeve valve means Within the cylinders controlling said cylinder intake and exhaust ports, an exhaustmanifold device communicating With the exhaust chambers and having a discharge outlet, longitudinally extending cylinder block Walls dividing the cylinderblock intake means and the cylinder block exhaust chambers, second Walls bounding said exhaust chambers extending generally transversely of the first Walls but deviating therefrom in the direction of the manifold discharge outlet suffi- Aciently to impart to the exhaust gases a directional movement toward said outlet before e entering the exhaust manifold.

sleeve valve type the combination of a cylinder block having a plurality of engine cylinders ported @for intake and exhaust, cylinder block intake means communicating with the cylinder intake ports, cylinder block exhaust chambers communicating vvth the cylinder exhaust ports, sleeve valve means Within the cylinders controlling saidk cylinder intake and exhaust ports, an exhaust manifold device communicating directly with the exhaust chambers and having a discharge outlet, said manifold being branched from said outlet to provide a pair of independentlongitudinally and oppositely extending portions respective- 1y communicating With the groups of engine cylinders lying to each side of the longitudinal engine center, thesaid chambersof each group of cylinders extending from the associated cylinder exhaust ports generally transversely of and Within the cylinder block toward the side thereof and in the direction of the manifold outlet.

6. In an internal combustion engine of the sleeve valve type the combination of a cylinder block having a plurality of engine cylinders ported for intake and exhaust, cylinder block intake means communicating With the cylinder intake ports, cylinderv block exhaust chambers communicating with the cylinder exhaust ports, sleeve valve means Within the cylinders controlling said cylinder intake and exhaust ports, an exhaust manifold device communicating directly With the exhaust chambers and having a discharge outlet, said manifold beingbran'ched from said outlet to provide a pair of independent longitudinally andoppositely extending portions respectively communicating with the groups of engine cylinders lying to each side of the longitudinal engine center, the said chambers of each group of cylinders extending from the associated cylinder exhaust ports generally transversely of and Within the cylinder block toward the side thereof and in the direction of the manifold outlet, the manifold branched portions each having a longitudinal opening extending at least the length of the exhaust chambers communicating therewith'.

7. In an internal combustion engine of the sleeve valve type the combination of a cylinder block having a plurality of engine cylinders ported for intake and exhaust, cylinder block intake means communicating With the cylinder intakeports, cylinder block exhaust chambers communicating With the Vcylinder exhaust ports, sleeve valve means Within the cylinders controlling said cylinder intake and exhaust ports, an exhaust manifold device communicating directly with the exhaust chambers and having a discharge outlet, said manifold being branched from said outlet to provide a pair of independent longitudinally and oppositely extending portions respectively communicating With the groups of engine cylinders lying to each side of the longitudinal engine center, the said y chambers of each group of cylinders extending from the associatedq cylinder exhaust ports generally transversely of and Within 5 the cylinder block, said chambers provided with a bend and the outer Yportion thereof eX- v tended inthe direction of the manifold out-j Q. y

let. v

In WitnessA whereof, I my name this 14th dayof December,Y A. D.

ARCHIE MACPHAIL NIVEN.

hereunto subscribe 

